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mtd: rawnand: denali: use more nand_chip pointers for internal functions 

With the recent refactoring, the NAND driver hooks now take a pointer
to nand_chip. Add to_denali() in order to convert (struct nand_chip *)
to (struct denali_nand_info *) directly. It is more useful than the
current mtd_to_denali().

I changed some helper functions to take (struct nand_chip *). This will
avoid pointer conversion back and forth, and ease further development.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
This commit is contained in:
Masahiro Yamada 2019-04-02 13:03:01 +09:00 committed by Miquel Raynal
parent e39bb78681
commit 750f69b826
1 changed files with 34 additions and 27 deletions
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61
drivers/mtd/nand/raw/denali.c
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@ -47,6 +47,11 @@ static inline struct denali_nand_info *mtd_to_denali(struct mtd_info *mtd)
return container_of(mtd_to_nand(mtd), struct denali_nand_info, nand);
}
static struct denali_nand_info *to_denali(struct nand_chip *chip)
{
return container_of(chip, struct denali_nand_info, nand);
}
/*
* Direct Addressing - the slave address forms the control information (command
* type, bank, block, and page address). The slave data is the actual data to
@ -282,12 +287,12 @@ static void denali_cmd_ctrl(struct nand_chip *chip, int dat, unsigned int ctrl)
denali->host_write(denali, DENALI_BANK(denali) | type, dat);
}
static int denali_check_erased_page(struct mtd_info *mtd,
struct nand_chip *chip, uint8_t *buf,
static int denali_check_erased_page(struct nand_chip *chip, u8 *buf,
unsigned long uncor_ecc_flags,
unsigned int max_bitflips)
{
struct denali_nand_info *denali = mtd_to_denali(mtd);
struct denali_nand_info *denali = to_denali(chip);
struct mtd_ecc_stats *ecc_stats = &nand_to_mtd(chip)->ecc_stats;
uint8_t *ecc_code = chip->oob_poi + denali->oob_skip_bytes;
int ecc_steps = chip->ecc.steps;
int ecc_size = chip->ecc.size;
@ -303,9 +308,9 @@ static int denali_check_erased_page(struct mtd_info *mtd,
NULL, 0,
chip->ecc.strength);
if (stat < 0) {
mtd->ecc_stats.failed++;
ecc_stats->failed++;
} else {
mtd->ecc_stats.corrected += stat;
ecc_stats->corrected += stat;
max_bitflips = max_t(unsigned int, max_bitflips, stat);
}
@ -316,11 +321,11 @@ static int denali_check_erased_page(struct mtd_info *mtd,
return max_bitflips;
}
static int denali_hw_ecc_fixup(struct mtd_info *mtd,
struct denali_nand_info *denali,
static int denali_hw_ecc_fixup(struct nand_chip *chip,
unsigned long *uncor_ecc_flags)
{
struct nand_chip *chip = mtd_to_nand(mtd);
struct denali_nand_info *denali = to_denali(chip);
struct mtd_ecc_stats *ecc_stats = &nand_to_mtd(chip)->ecc_stats;
int bank = denali->active_bank;
uint32_t ecc_cor;
unsigned int max_bitflips;
@ -346,16 +351,17 @@ static int denali_hw_ecc_fixup(struct mtd_info *mtd,
* Unfortunately, we can not know the total number of corrected bits in
* the page. Increase the stats by max_bitflips. (compromised solution)
*/
mtd->ecc_stats.corrected += max_bitflips;
ecc_stats->corrected += max_bitflips;
return max_bitflips;
}
static int denali_sw_ecc_fixup(struct mtd_info *mtd,
struct denali_nand_info *denali,
static int denali_sw_ecc_fixup(struct nand_chip *chip,
unsigned long *uncor_ecc_flags, uint8_t *buf)
{
unsigned int ecc_size = denali->nand.ecc.size;
struct denali_nand_info *denali = to_denali(chip);
struct mtd_ecc_stats *ecc_stats = &nand_to_mtd(chip)->ecc_stats;
unsigned int ecc_size = chip->ecc.size;
unsigned int bitflips = 0;
unsigned int max_bitflips = 0;
uint32_t err_addr, err_cor_info;
@ -404,7 +410,7 @@ static int denali_sw_ecc_fixup(struct mtd_info *mtd,
/* correct the ECC error */
flips_in_byte = hweight8(buf[offset] ^ err_cor_value);
buf[offset] ^= err_cor_value;
mtd->ecc_stats.corrected += flips_in_byte;
ecc_stats->corrected += flips_in_byte;
bitflips += flips_in_byte;
max_bitflips = max(max_bitflips, bitflips);
@ -587,9 +593,11 @@ static int denali_dma_xfer(struct denali_nand_info *denali, void *buf,
return ret;
}
static int denali_data_xfer(struct denali_nand_info *denali, void *buf,
size_t size, int page, int raw, int write)
static int denali_data_xfer(struct nand_chip *chip, void *buf, size_t size,
int page, int raw, int write)
{
struct denali_nand_info *denali = to_denali(chip);
iowrite32(raw ? 0 : ECC_ENABLE__FLAG, denali->reg + ECC_ENABLE);
iowrite32(raw ? TRANSFER_SPARE_REG__FLAG : 0,
denali->reg + TRANSFER_SPARE_REG);
@ -678,7 +686,7 @@ static int denali_read_page_raw(struct nand_chip *chip, uint8_t *buf,
size_t size = writesize + oobsize;
int ret, i, pos, len;
ret = denali_data_xfer(denali, tmp_buf, size, page, 1, 0);
ret = denali_data_xfer(chip, tmp_buf, size, page, 1, 0);
if (ret)
return ret;
@ -766,14 +774,14 @@ static int denali_read_page(struct nand_chip *chip, uint8_t *buf,
int stat = 0;
int ret;
ret = denali_data_xfer(denali, buf, mtd->writesize, page, 0, 0);
ret = denali_data_xfer(chip, buf, mtd->writesize, page, 0, 0);
if (ret && ret != -EBADMSG)
return ret;
if (denali->caps & DENALI_CAP_HW_ECC_FIXUP)
stat = denali_hw_ecc_fixup(mtd, denali, &uncor_ecc_flags);
stat = denali_hw_ecc_fixup(chip, &uncor_ecc_flags);
else if (ret == -EBADMSG)
stat = denali_sw_ecc_fixup(mtd, denali, &uncor_ecc_flags, buf);
stat = denali_sw_ecc_fixup(chip, &uncor_ecc_flags, buf);
if (stat < 0)
return stat;
@ -783,7 +791,7 @@ static int denali_read_page(struct nand_chip *chip, uint8_t *buf,
if (ret)
return ret;
stat = denali_check_erased_page(mtd, chip, buf,
stat = denali_check_erased_page(chip, buf,
uncor_ecc_flags, stat);
}
@ -866,17 +874,16 @@ static int denali_write_page_raw(struct nand_chip *chip, const uint8_t *buf,
memcpy(tmp_buf + size - len, oob, len);
}
return denali_data_xfer(denali, tmp_buf, size, page, 1, 1);
return denali_data_xfer(chip, tmp_buf, size, page, 1, 1);
}
static int denali_write_page(struct nand_chip *chip, const uint8_t *buf,
int oob_required, int page)
{
struct mtd_info *mtd = nand_to_mtd(chip);
struct denali_nand_info *denali = mtd_to_denali(mtd);
return denali_data_xfer(denali, (void *)buf, mtd->writesize,
page, 0, 1);
return denali_data_xfer(chip, (void *)buf, mtd->writesize, page,
0, 1);
}
static void denali_select_chip(struct nand_chip *chip, int cs)
@ -1092,9 +1099,9 @@ static const struct mtd_ooblayout_ops denali_ooblayout_ops = {
.free = denali_ooblayout_free,
};
static int denali_multidev_fixup(struct denali_nand_info *denali)
static int denali_multidev_fixup(struct nand_chip *chip)
{
struct nand_chip *chip = &denali->nand;
struct denali_nand_info *denali = to_denali(chip);
struct mtd_info *mtd = nand_to_mtd(chip);
struct nand_memory_organization *memorg;
@ -1226,7 +1233,7 @@ static int denali_attach_chip(struct nand_chip *chip)
chip->ecc.read_oob = denali_read_oob;
chip->ecc.write_oob = denali_write_oob;
ret = denali_multidev_fixup(denali);
ret = denali_multidev_fixup(chip);
if (ret)
return ret;